DE44906C - Process for the preparation of yellow azo dyes by the action of tetrazo compounds of diphenyl and ditolyl on oxytoluic acid - Google Patents

Process for the preparation of yellow azo dyes by the action of tetrazo compounds of diphenyl and ditolyl on oxytoluic acid

Info

Publication number
DE44906C
DE44906C DENDAT44906D DE44906DA DE44906C DE 44906 C DE44906 C DE 44906C DE NDAT44906 D DENDAT44906 D DE NDAT44906D DE 44906D A DE44906D A DE 44906DA DE 44906 C DE44906 C DE 44906C
Authority
DE
Germany
Prior art keywords
oxytoluic
preparation
acid
ditolyl
diphenyl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DENDAT44906D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Farbenfabriken Vorm Friedr Bayer and Co
Publication of DE44906C publication Critical patent/DE44906C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/02—Disazo dyes
    • C09B35/039—Disazo dyes characterised by the tetrazo component
    • C09B35/08—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl
    • C09B35/10—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl from two coupling components of the same type
    • C09B35/14—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl from two coupling components of the same type from hydroxy compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

BERLIN. GEDRUCKT IN DER REICHSDRUCKEREI.BERLIN. PRINTED IN THE REICH PRINTING COMPANY.

Claims (1)

Patent-Anspruch:Patent claim: Verfahren zur Darstellung direct färbender gelber Azofarbstoffe, darin bestehend, dafs man an Stelle der in dem Patent Nr. 31658 aufgeführten Oxybenzoesäuren die m- Oxytoluylsäure setzt.Process for the preparation of direct coloring yellow azo dyes, consisting in that one instead of the oxybenzoic acids listed in Patent No. 31658, m-oxytoluic acid puts.
DENDAT44906D Process for the preparation of yellow azo dyes by the action of tetrazo compounds of diphenyl and ditolyl on oxytoluic acid Expired - Lifetime DE44906C (en)

Publications (1)

Publication Number Publication Date
DE44906C true DE44906C (en)

Family

ID=320108

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT44906D Expired - Lifetime DE44906C (en) Process for the preparation of yellow azo dyes by the action of tetrazo compounds of diphenyl and ditolyl on oxytoluic acid

Country Status (1)

Country Link
DE (1) DE44906C (en)

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